Wire covered roll



Jan. 19, 1932.-

H. R. WILLIAMS 1,841,999

WIRE COVERED ROLL Filed May 3, 193.0

A fiqz O (3 ll (3 Q (3 rem/a Patented Jan. 19, 1932 HARRISON R.WILLIAMS, OF GLENS FALLS, NEW YORK WIRE COVERED ROLL ApplieationlflledMay 3,4930. Serial No. 449,548.

The present invention relates to wire covered rolls and is moreparticularly directed toward the provision of a wire covered roll foruse in paper machines.

; In paper machines the Fourdrinier wire is carried on a series ofsmall, or table, rolls and .is assed about larger rolls. These rolls aresu jected not only to the wear of the wire screen but also to thecorrosive influence of lo the chemicals employed in paper makingprocesses. Ordinary iron rolls cannot be employed because the chemicalspresent cause rapid deterioration. Bronze rolls, which would resist thechemical action and the wear, are of insufiicient strength to stand theconstant vibration and, hence, are likely to break.

The resent invention contemplates a wire covere roll for this purpose,this roll having a wood or metal core and a winding in the form of acompact or closely spaced spiral of wear resistant and non-corrosivewire, preferably of small gauge, so as to present a comparatively smoothsurface for the Fourdrinier wire.

The accompanying drawings show several embodiments of the wire coveredroll and indicate methods of makin the same, itbeing understood that thedrawlngs are illustrative of the invention rather than limiting thesame.

In the'se drawings:

Figure 1 is a diagrammatic view of a paper making machine indicating therolls and Fourdrinier wire;

Figure 2 is an enlarged elevational view showing a fragment of a roll;

F i re 3 is a view similar to Figure 2, showing both ends of the roll;and

Figures 4 and 5 are transverse and longitudinal sections showing amodification.

Figure 1 illustrates a paper making machine and shows the Fourdrinierwireat 10 and a few of the many table rolls at 11. One of these tablerolls is indicated in detail in Figures 2 and 3. It consists of a rigidcore 12, turned to the desired diameter and carrying a compact, closelyspaced spiral 13 of wire. One way of attaching the end of the 60 wire toaniron core is to apply a solution of copper sulphate to a spot near theend of the core, thereby depositing copper, as indicated by thestippling 14. The end of the wire may then be coated with soft solder,placed next the copper coating on the core and a torch applied to heatthe wire and core to cause the wire to be soldered to the core. Anotherway of securing the wire to the core is to apply a small piece or sheetof silver solder to the core. The wire is then applied to the surface ofthe silver solder and a blow torch or other heating means applied so asto heat the silver and bring about a fusion of the wire, silver andmetal roll. This form of attachment afl'ords tremendous strength andhigh durability.

' After the end of the wire is secured to the roll, the rest of the wireis wound onto the roll, making a compact, close spiral, as indicated at13. Durin the winding operation the roll is prefera ly put in a latheand the wire guided under tension by the carriage of the lathe, thecarriage being set to correspond with the diameter of the wire.

. After the wire is wound on, the other end is soldered to the roll inthe manner previously described.

In some cases it is necessary to completely coat the iron core so as toprotect it against the action of the mill acids and electrolysis betweenthe wire and core. In such cases the roll 20 may be covered with goldleaf 21, thereby providing a pure goldsurface which will be exposed toany moisture. The gold surface is then covered with a layer of asphalttape, or other insulating material, indicated at 22. An insulating screw23 is secured in a tapped hole in the body of the roll, and the wire 24anchored to this screw, after which it is Wound on the roll, sinking itinto the tape as indicated.

The windingis preferably made of wire of small gauge, say, from twelveto twentyfive gauge, and where round wire is used, it presents acomparatively smooth surface which has no harmful efl'ecton theFourdrinier wire with which it contacts. In any case, the surface may bemade smoother by grinding oif the wires, as indicated at 24', in Figure5, or square wire or flat banding strip may be employed. By employingthis process, it is possible to make rolls with noncorrosive wearresistant surface of wire, such as stainless steel, brass, aluminum,bronze, or other material, and at the same time avoid the expense ofbronze rolls of less strength. The cost of these wire wound rolls isvery much less than the cost of the bronze rolls now in use. These rollsare suitable for table rolls, dryer rolls, or wherever a roll with sucha surface is desired.

It is obvious that the invention may be embodied in many forms andconstructions, and I wish it to be understood that the particular formsshown are but a few of the many forms. Various modifications and changesbeing possible, I do not otherwise limit myself in any way with respectthereto.

The methods herein disclosed form subject matter for a divisionalapplication.

What is claimed is:

1. A paper machine comprising a Fourdrinier wire passed over a tableroll the surface of which is a compact spiral of wear resistant,non-corrosive wire.

2. A paper machine comprising a Fourdrinier wire supported on rollshaving a winding wire of small size to produce a comparatively smoothsurface.

3. A paper machine comprising a Fourdrinier wire supported on rollshaving an iron core and a winding of wear resistant, non-corrosive,stainless steel Wire of small auge.

4. A roll for paper machines or the like comprising a core of base metaland a compact windin of non-corrosive wear resistant wire of sma 1 sizeto provide a comparatively smooth surface.

5. A roll for paper machines or the like comprising an iron core and acompact winding of non-corrosive stainless steel Wire of small size toprovide a comparatively smooth surface.

6. A roll comprising an iron core, a layer of gold leaf on the core, awinding of insulating tape on the gold leaf, and a compact winding ofnon-corrosive wear resistant wire of small size about the tape.

7. A roll comprising an iron core, a layer of gold leaf on the core, awinding of insulating tape on the gold leaf, and a compact winding ofnon-corrosive wear resistant wire of small size about the tape, the endsof the wire being anchored to insulating posts secured to the core.

HARRISON R. WILLIAMS.

